Observational constraint on the fourth derivative of the inflaton potential

Details Observational constraint on the fourth derivative of the inflaton potential Observational constraint on the fourth derivative of the inflaton potential

2002-10-07

arxiv.org/abs/hep-ph/0210095v1

Mon.Not.Roy.Astron.Soc. 339 (2003) 212-214

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 3 figures

Scientific paper

10.1046/j.1365-8711.2003.06164.x

We consider the flow-equations for the 3 slow-roll parameters n_S (scalar spectral index), r (tensor to scalar ratio), and dn_S/dlnk (running of the spectral index). We show that the combination of these flow-equations with the observational bounds from cosmic microwave background and large scale structure allows one to put a lower bound on the fourth derivative of the inflationary potential, M_P^4(V''''/V) > -0.02.

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